Home / 91,554.40-137,229.20-52,130.40

Finding the Fourth Proportional to 91,554.40, 137,229.20 and 52,130.40

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Solution

The fourth proportional to 91,554.40, 137,229.20 and 52,130.40 is: 78,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,554.40 : 137,229.20 = 52,130.40 : x
  2. Step 2: Convert to fraction form
    91,554.40/137,229.20 = 52,130.40/x
  3. Step 3: Cross multiply
    91,554.40x = 137,229.20 × 52,130.40
  4. Step 4: Simplify right side
    91,554.40x = 7,153,813,087.68
  5. Step 5: Solve for x
    x = 7,153,813,087.68/91,554.40
  6. Step 6: Final answer
    x = 78,137.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.